[URL="http://api.tweetmeme.com/share?url=http://espn.go.com/nfl/story/_/id/8636387/jim-harbaugh-san-francisco-49ers-minor-procedure-heart&service=bit.ly&source=espn"][IMG]http://api.tweetmeme.com/imagebutton.gif?url=http://espn.go.com/nfl/story/_/id/8636387/jim-harbaugh-san-francisco-49ers-minor-procedure-heart[/IMG][/URL]San Francisco 49ers coach Jim Harbaugh has been sent to the hospital for a "minor procedure" after doctors discovered he had an irregular heartbeat.